app/lib/paegs/mine_page/order_page/order_page.dart

import 'dart:convert';

import 'package:bbyyy/beans/smart_order_bean_entity.dart';
import 'package:bbyyy/https/MyDio.dart';
import 'package:bbyyy/my_tools/const.dart';
import 'package:bbyyy/my_tools/dims.dart';
import 'package:bbyyy/my_tools/my_colors.dart';
import 'package:bbyyy/my_tools/my_cookie.dart';
import 'package:bbyyy/my_tools/my_tools.dart';
import 'package:bbyyy/my_tools/my_views.dart';
import 'package:flutter/material.dart';
import 'package:flutter_slidable/flutter_slidable.dart';
import 'package:flutter_svg/svg.dart';
import 'package:pull_to_refresh/pull_to_refresh.dart';

class OrderPage extends StatefulWidget {
  @override
  _OrderPageState createState() => _OrderPageState();
}

class _OrderPageState extends State<OrderPage> {
  int selectedIndex = 0;
  List<SmartOrderBeanDataData> orders = [];
  RefreshController controller = RefreshController(initialRefresh: true);
  int page = 1;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: MyColors.cE7E7E7,
      body: Column(
        children: [
          MyViews().myAppBar('订单', context, []),
          Container(
            height: 40,
            color: Colors.white,
            child: Row(
              children: [
                GestureDetector(
                  onTap: () {
                    setState(() {
                      selectedIndex = 0;
                      page = 1;
                      controller.requestRefresh();
                    });
                  },
                  behavior: HitTestBehavior.translucent,
                  child: Padding(
                    padding: EdgeInsets.only(left: 10, right: 10),
                    child: Column(
                      children: [
                        Text(
                          '未收',
                          style: TextStyle(
                              color: selectedIndex == 0
                                  ? MyColors.cFF4233
                                  : MyColors.c666666,
                              fontSize: 15),
                        ),
                        Container(
                          height: 10,
                          child: Visibility(
                            child: SvgPicture.asset('images/svg/tab.svg'),
                            visible: selectedIndex == 0,
                          ),
                        )
                      ],
                      mainAxisAlignment: MainAxisAlignment.end,
                    ),
                  ),
                ),
                GestureDetector(
                  onTap: () {
                    setState(() {
                      selectedIndex = 1;
                      page = 1;
                      controller.requestRefresh();
                    });
                  },
                  behavior: HitTestBehavior.translucent,
                  child: Padding(
                    padding: EdgeInsets.only(left: 10, right: 10),
                    child: Column(
                      children: [
                        Text(
                          '已收',
                          style: TextStyle(
                              color: selectedIndex == 1
                                  ? MyColors.cFF4233
                                  : MyColors.c666666,
                              fontSize: 15),
                        ),
                        Container(
                          height: 10,
                          child: Visibility(
                            child: SvgPicture.asset('images/svg/tab.svg'),
                            visible: selectedIndex == 1,
                          ),
                        )
                      ],
                      mainAxisAlignment: MainAxisAlignment.end,
                    ),
                  ),
                ),
                GestureDetector(
                  onTap: () {
                    setState(() {
                      selectedIndex = 2;
                      page = 1;
                      controller.requestRefresh();
                    });
                  },
                  behavior: HitTestBehavior.translucent,
                  child: Padding(
                    padding: EdgeInsets.only(left: 10, right: 10),
                    child: Column(
                      children: [
                        Text(
                          '未付',
                          style: TextStyle(
                              color: selectedIndex == 2
                                  ? MyColors.cFF4233
                                  : MyColors.c666666,
                              fontSize: 15),
                        ),
                        Container(
                          height: 10,
                          child: Visibility(
                            child: SvgPicture.asset('images/svg/tab.svg'),
                            visible: selectedIndex == 2,
                          ),
                        )
                      ],
                      mainAxisAlignment: MainAxisAlignment.end,
                    ),
                  ),
                )
              ],
              mainAxisAlignment: MainAxisAlignment.spaceAround,
            ),
          ),
          Expanded(
            child: SmartRefresher(
              controller: controller,
              onLoading: onLoading,
              onRefresh: onRefresh,
              enablePullUp: true,
              enablePullDown: true,
              child: orders.length == 0
                  ? SingleChildScrollView(child: noData())
                  : ListView.builder(
                      itemBuilder: (c, index) {
                        return Slidable(
                          child: MyViews()
                              .getNoPayGoodsItem(orders[index], context, -1),
                          actionPane: SlidableDrawerActionPane(),
                          enabled: false,
                          actionExtentRatio: 0.25,
                          secondaryActions: <Widget>[
                            SlideAction(
                              child: Container(
                                child: Container(
                                  decoration: BoxDecoration(
                                    borderRadius: BorderRadius.circular(30),
                                    color: MyColors.cFF4233,
                                  ),
                                  height: 60,width: 60,
                                  child: SvgPicture.asset('images/svg/del.svg',height: 40,width: 40,),
                                  alignment: Alignment.center,
                                ),
                              ),
                              onTap: (){
                                showSimpleDialog(
                                    '将删除订单（${orders[index].uid}）', context,
                                        () {
                                      Navigator.pop(context);
                                      deleteOrder(orders[index]);
                                    });
                              },
                            )
                          ],
                        );
                      },
                      itemCount: orders.length,
                      padding: EdgeInsets.only(top: 10),
                    ),
            ),
          ),
        ],
      ),
    );
  }

  void onLoading() {
    page++;
    checkingOrder();
  }

  void onRefresh() {
    page = 1;
    checkingOrder();
  }

  checkingOrder() {
    var conditions = [];
    if (selectedIndex == 0) {
      conditions.add("state == $orderStateUnpaid");
      conditions.add('seller_uid == ${MyCookie().getUID()}');
    } else if (selectedIndex == 1) {
      conditions.add("state == $orderStatePaid");
      conditions.add('seller_uid == ${MyCookie().getUID()}');
    } else {
      conditions.add("state == $orderStateUnpaid");
      conditions.add('buyer_name LIKE ${MyCookie().getName()}');
    }
    MyDio().query({
      "key": "order",
      "filters": {"conditions": conditions},
      "dims": orderDims,
      "paging": [page, 20],
      "order_by": ["create_time,DESC"]
    }, (response, hasError) {
      if (!hasError) {
        SmartOrderBeanEntity entity = SmartOrderBeanEntity()
            .fromJson(json.decode(response.data.toString()));
        if (page == 1) {
          orders.clear();
        }
        orders.addAll(entity.data.data);
        setState(() {});
      }
      endRe(controller);
    }, (error) {});
  }

  void deleteOrder(SmartOrderBeanDataData order) {
    MyDio().del({
      'key': 'order',
      'ids': [order.id]
    }, (response, hasError) {
      if (!hasError) {
        orders.remove(order);
        setState(() {});
      }
    }, (error) {});
  }
}